Abstract

Small amounts of soil desaturation can substantially impact the undrained static and cyclic response of sand when compared to the fully saturated case. Due to its impact on undrained behavior, desaturation can increase the strain hardening behavior of loose sand subject to a monotonic static load and is an emerging technique for mitigation of the liquefaction potential of sands. Several investigators have demonstrated the increase in the cyclic strength, decrease in pore pressure generation, and reduction in seismic settlement that accompanies small amounts of desaturation in a loose sand. However, the potential impacts of desaturation on the undrained static response of dense soils is less well studied. In this work, results from the cyclic and static undrained testing of a natural beach sand and Ottawa 20-30 silica sand show that, while desaturation does significantly improve the cyclic response of dense sand, desaturation may also lead to a decrease in the monotonic compressive strength of sand initially dense of critical state. The impact of this result on the implementation of liquefaction mitigation via desaturation is discussed.

Original languageEnglish (US)
Pages (from-to)232-241
Number of pages10
JournalGeotechnical Special Publication
Volume2018-March
Issue numberGSP 296
DOIs
StatePublished - Jan 1 2018
Event3rd International Foundation Congress and Equipment Expo 2018: Innovations in Ground Improvement for Soils, Pavements, and Subgrades, IFCEE 2018 - Orlando, United States
Duration: Mar 5 2018Mar 10 2018

Fingerprint

Sand
sand
Liquefaction
liquefaction
mitigation
Soils
Silica sand
static response
Pore pressure
Beaches
critical state
effect
Strain hardening
Compressive strength
hardening
compressive strength
pore pressure
beach
soil
silica

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this

The Effect of Desaturation on the Static and Cyclic Mechanical Response of Dense Sand. / O'Donnell, Sean T.; Kavazanjian, Edward.

In: Geotechnical Special Publication, Vol. 2018-March, No. GSP 296, 01.01.2018, p. 232-241.

Research output: Contribution to journalConference article

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